Answer:
n = 3
Explanation:
We know that the nth-order maximum for the Young's two-slit experiment is given by the following expression:
dsin(θ) = nλ
If two maxima concides we must have the relation:
nλ1 = mλ2 --- eq1
In this particular experiment
m = n+1
λ1 = 680 nm
λ2 = 510 nm
Replacing m in eq1 we have
nλ1 = (n+1)λ2
Solving for n we have:
n = λ2/(λ1-λ2)
Therefore:
n = 510/(680-510)=3
<h3><u>Answer;</u></h3>
= 2868 Newtons
<h3><u>Explanation;</u></h3>
Centripetal force is a force that acts on an object or a body in circular path and is directed towards the center of the circular path.
Centripetal force is given by the formula;
mv²/r ; where m is the mass of the body, r is the radius of the circular path and v is the velocity of a body;
mass = 65 kg, velocity = 15 m/s and r = 5.1 m
Therefore;
Centripetal force = (65 × 15²)/ 5.10
= 2867.65 Newtons
= 2868 N
a). Frequency = (4,000 rev/minute)·(1 minute/60 sec) = <em>66 and 2/3 rev/sec</em>
b). Period = 1 / frequency
Period = 1 / (66-2/3 rev/sec)
Period = 1/66-2/3 sec/rev
<em>Period = 0.015 sec/rev </em>
Magnetic forces act at a distance. The opposites attract and pull each other closer